发明名称 |
METHOD OF DISPOSAL OF WASTE CONTAINING HEAVY METAL AND SEALING COMPOUND SUITABLE FOR THE DISPOSAL |
摘要 |
(A) Heavy metal-containing wastes are kneaded in melt with (B) an alkali metal compound or an alkaline earth metal compound and (C) sulfur, or with (E) a sulfide, or with these along with (D) a salt of a metal of which the standard electrode potential is higher than that of the cation of the component (B) or (E), in the presence of a non-aqueous medium, and the resulting melt mixture is cooled and solidified. In the method of treating heavy metal-containing wastes, the heavy metals in the wastes are efficiently passivated, and the heavy metals thus passivated are not released from the treated wastes. |
申请公布号 |
EP0993879(A4) |
申请公布日期 |
2004.09.01 |
申请号 |
EP19980929755 |
申请日期 |
1998.06.30 |
申请人 |
IDEMITSU KOSAN COMPANY LIMITED |
发明人 |
MIZUTANI, MAKOTO;HACHIYA, SATOSHI;AKAGAWA, TOSHIYUKI |
分类号 |
A62D3/33;A62D3/36;A62D101/08;A62D101/43;B09B3/00 |
主分类号 |
A62D3/33 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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